delay.h
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1996-1997 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Network Research
- * Group at Lawrence Berkeley National Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#) $Header: /cvsroot/nsnam/ns-2/link/delay.h,v 1.16 2003/04/01 01:15:01 sfloyd Exp $ (LBL)
- */
- #ifndef ns_delay_h
- #define ns_delay_h
- #include <assert.h>
- #include "packet.h"
- #include "queue.h"
- #include "ip.h"
- #include "connector.h"
- class LinkDelay : public Connector {
- public:
- LinkDelay();
- void recv(Packet* p, Handler*);
- void send(Packet* p, Handler*);
- void handle(Event* e);
- double delay() { return delay_; }
- inline double txtime(Packet* p) {
- return (8. * hdr_cmn::access(p)->size() / bandwidth_);
- }
- double bandwidth() const { return bandwidth_; }
- void pktintran(int src, int group);
- protected:
- int command(int argc, const char*const* argv);
- void reset();
- double bandwidth_; /* bandwidth of underlying link (bits/sec) */
- double delay_; /* line latency */
- Event intr_;
- int dynamic_; /* indicates whether or not link is ~ */
- double latest_time_; /* latest scheduled packet time, for use
- * with avoidReordering_ */
- PacketQueue* itq_;
- int total_[4];
- int avoidReordering_; /* indicates whether or not to avoid
- * reordering when link bandwidth or delay
- * changes */
- };
- #endif